If I remember Cliff Click's [Azul] lecture "A JVM does what?" correctly, each machine whether JVM or x86 defines what is managed by the machine and what isn't.

If I remember Cliff Click's [Azul] lecture "A JVM does what?" correctly, each machine whether JVM or x86 defines what is managed by the machine and what isn't. Just as x86 represents a machine which defines op codes only and leaves memory and process management to the operating system, the outcome of JVM's choices about taking responsibility for garbage collection, security, machine code generation is an interesting machine which can provide performance gains through time, just like Moore's law. I don't work with the JVM at all, so all I know I learnt from Cliff's lecture. The slides are here http://www.azulsystems.com/blog/wp-content/uploads/2011/03/2011_WhatDoesJVMDo.pdf http://www.azulsystems.com/blog/wp-content/uploads/2011/03/2... and video here: http://jeremymanson.blogspot.com/2011/04/cliff-click-in-jvm-does-what.html http://jeremymanson.blogspot.com/2011/04/cliff-click-in-jvm-...